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Two novel windmill-like tetrasupporting heteropolyoxometalates: [MoVI7MoVVIV8O40(PO4)][M(phen)2(OH)]2[M(phen)2(OEt)]2(M=Co, Ni)

Authors
Journal
Solid State Sciences
1293-2558
Publisher
Elsevier
Publication Date
Volume
6
Issue
7
Identifiers
DOI: 10.1016/j.solidstatesciences.2004.04.003
Keywords
  • Solvothermal Syntheses
  • Crystal Structures
  • Polyoxometalates
  • Cobalt
  • Nickel
  • Magnetic Properties
Disciplines
  • Earth Science
  • Geography
  • Physics

Abstract

Abstract Two interesting neutral tetrasupporting heteropolyoxometalates: [Mo VI 7Mo VV IV 8O 40(PO 4)][M(phen) 2(OH)] 2[M(phen) 2(OEt)] 2· xH 2O (phen=1,10-phenanthroline, EtOH=ethanol, M=Co, x=7, 1; M=Ni, x=6, 2) were hydrothermally prepared and structurally characterized. The mixed molybdenum–vanadium polyoxoanion [Mo VI 7Mo VV IV 8O 40(PO 4)] 4− exist in both two complexes, which acts as a bridge to covalently link two pairs of transition metal complex fragments, generating neutral windmill-like trimetallic nanocluster polyoxometalates. Variable-temperature magnetic susceptibility measurements of complexes 1 and 2 reveal that antiferromagnetic exchange interaction exists in this type of trimetallic tetrasupporting heteropolyoxometalates.

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